Re: Topband: Modern Grand Solar Minimum from 2020 to 2055?
Not to worry, Bernie would pay it off for you. On 6/25/2019 8:03 PM, W0MU Mike Fatchett wrote: I would need a student loan for the amp and upgrade to my coax! W0MU _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Modern Grand Solar Minimum from 2020 to 2055?
I would need a student loan for the amp and upgrade to my coax! W0MU On 6/25/2019 7:51 PM, Gene Smar via Topband wrote: Maunder Minimum 2.0 solution: "temporarily" raise legal limit to 15-20 kW. I'm just sayin'. 73 de Gene Smar AD3F -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of k...@radioprism.com Sent: Tuesday, June 25, 2019 9:24 PM To: topband@contesting.com Subject: Re: Topband: Modern Grand Solar Minimum from 2020 to 2055? A grand solar minimum would be so disastrous for upper HF. Although I'd very much enjoy working Asians on 12 and 10 meters again, it now appears that may be less likely. OTOH it would be of some benefit to have a quiet sun if the Earth's magnetic field is indeed ready to flip! I first got licensed as a ham right between Cycles 19 and 20- so as a new General class op in 1964 I was first exposed to dead minimum solar activity. At that time, working into Oceania in the evenings on 20m was a pretty big deal and often a surprise to a young, inexperienced ham. It sure made me appreciate the higher bands when they reawakened. 73, David K3KY _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Modern Grand Solar Minimum from 2020 to 2055?
Maunder Minimum 2.0 solution: "temporarily" raise legal limit to 15-20 kW. I'm just sayin'. 73 de Gene Smar AD3F -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of k...@radioprism.com Sent: Tuesday, June 25, 2019 9:24 PM To: topband@contesting.com Subject: Re: Topband: Modern Grand Solar Minimum from 2020 to 2055? A grand solar minimum would be so disastrous for upper HF. Although I'd very much enjoy working Asians on 12 and 10 meters again, it now appears that may be less likely. OTOH it would be of some benefit to have a quiet sun if the Earth's magnetic field is indeed ready to flip! I first got licensed as a ham right between Cycles 19 and 20- so as a new General class op in 1964 I was first exposed to dead minimum solar activity. At that time, working into Oceania in the evenings on 20m was a pretty big deal and often a surprise to a young, inexperienced ham. It sure made me appreciate the higher bands when they reawakened. 73, David K3KY _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Modern Grand Solar Minimum from 2020 to 2055?
A grand solar minimum would be so disastrous for upper HF. Although I'd very much enjoy working Asians on 12 and 10 meters again, it now appears that may be less likely. OTOH it would be of some benefit to have a quiet sun if the Earth's magnetic field is indeed ready to flip! I first got licensed as a ham right between Cycles 19 and 20- so as a new General class op in 1964 I was first exposed to dead minimum solar activity. At that time, working into Oceania in the evenings on 20m was a pretty big deal and often a surprise to a young, inexperienced ham. It sure made me appreciate the higher bands when they reawakened. 73, David K3KY _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Antenna Switch isolation capacitor
The Ameritron RCS-4 uses three .01uF 1kV disc capacitors in parallel in this position. I don't think 4 ohms of XC is a biggie in the antenna system SWR, but increased current handling capability of paralleled capacitors is a real advantage at legal limit. Tim N3QE On Tue, Jun 25, 2019 at 4:30 PM wrote: > Hi All, > > A friend on 160 has had a problem with a Heathkit remote antenna switch > due to a partial failure of the isolation capacitor in the remote unit. > It is a .02 uF 1.6 KV disc ceramic that isolates the DC from the antennas. > > Since this results in about 4.4 ohms of XC - capacitive reactance in > series with the 160 TX antenna, I was wondering if it would it be worth > while to substitute a .05 uF disc ceramic to reduce the capacitive > reactance (XC) to under 2 ohms on 160 meters? > > Thanks any info. 73, > > George, K8GG > > > > _ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Antenna Switch isolation capacitor
The capacitor value is OK, but disc ceramics do handle current well. 73Bruce, k1fz -From: k...@voyager.net To: topband@contesting.com Cc: Sent: Tuesday June 25 2019 4:22:27PM Subject: Topband: Antenna Switch isolation capacitor Hi All, A friend on 160 has had a problem with a Heathkit remote antenna switch due to a partial failure of the isolation capacitor in the remote unit. It is a .02 uF 1.6 KV disc ceramic that isolates the DC from the antennas. Since this results in about 4.4 ohms of XC - capacitive reactance in series with the 160 TX antenna, I was wondering if it would it be worth while to substitute a .05 uF disc ceramic to reduce the capacitive reactance (XC) to under 2 ohms on 160 meters? Thanks any info. 73, George, K8GG _ Searchable Archives: http://www.contesting.com/_topband [1] - Topband Reflector Links: -- [1] http://www.contesting.com/_topband _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Topband: Antenna Switch isolation capacitor
Hi All, A friend on 160 has had a problem with a Heathkit remote antenna switch due to a partial failure of the isolation capacitor in the remote unit. It is a .02 uF 1.6 KV disc ceramic that isolates the DC from the antennas. Since this results in about 4.4 ohms of XC - capacitive reactance in series with the 160 TX antenna, I was wondering if it would it be worth while to substitute a .05 uF disc ceramic to reduce the capacitive reactance (XC) to under 2 ohms on 160 meters? Thanks any info. 73, George, K8GG _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Topband: FS: Alpha 87A
For Sale: Alpha 87A legal limit amplifier. Excellent condition. $2250. Low hours on genuine Eimac 3CX800A7s. Full output on all bands. Aux Fan, Alpha-Max auto-tune. Cables, manuals. Original owner. Pick up near Santa Monica, CA airport or plus insured shipping in factory boxes.. Please email me off list. Tks & 73, Steve WB6RSE _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
Re: Topband: Modern Grand Solar Minimum from 2020 to 2055?
Well Frank if they are wrong we can for sure never to call them experts again. I also see NOAA does not agree with the Australians who think the minimum has already gone through. Again only one winner. 73 Clive GM3POI -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of donov...@starpower.net Sent: 25 June 2019 06:13 To: topband Subject: Topband: Modern Grand Solar Minimum from 2020 to 2055? This article in Nature forecasts that we're approaching a grand solar minimum -- similar to Maunder Minimum -- starting in 2020 and lasting for three solar cycles. I hope these scientists are wrong... www.nature.com/articles/s41598-019-45584-3 An international panel of experts coordinated by the NOAA and NASA released its preliminary s olar cycle 25 forecast in April, 2019 forecasting that cycle 25 will peak between 2023 and 2026 with a sunspot number between 95 and 130. I hate forecasts, especially about the future... 73 Frank W3LPL _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
